Halyomorpha halys (Stål, 1855), Stal, 1855

Vétek, Gábor, Papp, Veronika, Haltrich, Attila & Rédei, Dávid, 2014, First record of the brown marmorated stink bug, Halyomorpha halys (Hemiptera: Heteroptera: Pentatomidae), in Hungary, with description of the genitalia of both sexes, Zootaxa 3780 (1), pp. 194-200 : 195

Halyomorpha halys (Stål, 1855) ( Pentatomidae , Pentatominae , Cappaeini)

( Figs. 1 –21)

Material examined: Hungary, Budapest: Buda Arboretum [47.4804°N, 19.0409°E], 11.x.2013, inside building ‘A’, G. Vétek leg. (1 ♂); Péterimajor [47.3978°N, 19.1476°E], 30.x.2013, on Acer negundo L., G. Vétek and V. Papp leg. (4 ♂ 1 ♀); same locality and date, on Euonymus europaeus L., G. Vétek leg. (1 5th instar); same locality and date, on Sophora japonica L., A. Haltrich leg. (1 ♀).

Voucher specimens have been deposited in the Hemiptera Collection of the Hungarian Natural History Museum, Budapest, and the Department of Entomology, Corvinus University of Budapest.

External male genitalia ( Figs. 1 –13). Genital capsule ( Figs. 1–3 ) subquadratic in dorsal view, infolding of ventral rim ( Fig. 1 : vif) strongly produced posteriad forming a pair of subhorizontal, dorsoventrally flattened, apically obtusely truncate lobes, posterior margin broadly and deeply excised between the lobes, shallowly emarginated medially; posterior opening dorsoventrally elongate, surrounded by a broad, strongly sclerotized and pigmented median projection ( Fig. 2 : mp) dorsally; cuplike sclerite ( Fig. 2 : cs) immovably fused with ventral wall of genital capsule, visible as a pair of shallow submedian ridges forming its lateral border. Paramere ( Figs. 4–8 ) transversely elongate, oblique basal process (sensory lobe) ( Fig. 7 : blp) and a curved apical process ( Fig. 7 : app) connected by a broad, laminate lobe at their anterior surfaces ( Figs. 6–7 : lam). Phallus (Figs. 9–13) directed vertically within genital capsule in rest ( Fig. 3 ); basal plate (Figs. 9–10: bp) broadly laminate, relatively short in lateral view; phallotheca (Figs. 9, 12: phth) oval, broadest around its middle in dorsal view, base and apex constricted; ventral outline emarginated slightly basad of middle in lateral view; with a pair of short, sclerotized projections ventrobasally; hinge (Fig. 12: hi) reduced, not protruding; conjunctiva with a large, saccular dorsal process (Fig. 12: cp-d) deeply invaginated into phallotheca in repose (Fig. 9: cp-d); first conjunctival process (cp-I) subdivided into 2 pairs of secondary processes, both situated outside of conjunctiva in repose: cp-I1 (Figs. 9–12: cp- I1) slightly longer and narrower than cp-I2, membranous but narrowly sclerotized along its ventromedian margin; cp-I2 (Figs. 9–11: cp-I2) short and broad, rounded, entirely membranous; second conjunctival process (cp-II) subdivided into 2 pairs of secondary processes: cp-II1 (Figs. 9–12: cp-II1) deeply invaginated into phallotheca in repose with only its extreme apex free (Figs. 9–11: cp-II1), long, membranous, its apical portion sclerotized and gradually tapering towards apex; cp-II2 (Figs. 9–12: cp-II2) with basal half invaginated into phallotheca in repose (Figs. 9–11: cp-II2), base associated with apical branches of support bridge prolongation (Fig. 12: sbp), its contralateral counterparts fused along midline (forming a distinct fusion line) except their extreme apices, stout, heavily sclerotized laterally, rather membranous medially, apically truncate, with distilateral extremity produced into a narrow projection, extreme base closely neighbouring base of aedeagus but not forming a “medial penial plate” in the strict sense; endophallic reservoir (Fig. 9–10, 12: res) relatively small, occupying somewhat less than basal half of lumen of phallotheca in repose (Figs. 9–10); endophallic duct (Figs. 12: end) relatively short, ∩- shaped curved, surrounded by apical branches of support bridge prolongation (Figs. 9–12: sbp); aedeagus (Fig. 9– 13: aed) long and thin, broadly curved upwards in basal portion, running straight towards phallotreme, apicalmost portion slightly arched, extreme apex around phallotreme obliquely truncate, not broadened.

External female genitalia. Ovipositor. Tergite VIII (Fig. 14: t8) short, transversal; laterotergite VIII (Fig. 14– 15, 17: lt8) short, posterior margin produced into minute teeth; valvifers VIII (Fig. 15: vf8) short, posterior and mesal margin both straight, enclosing nearly a right angle; laterotergites IX (Figs. 14–15, 17: lt9) obliquely directed, broadly separated, apices slightly surpassing posterior margin of tergite VIII; valvifers IX (Figs. 15, 17: vf9) completely fused, their median portion broadly exposed in rest (cf. Fig. 15), laterally they are produced in a pair of long, straight, tapering projections; valvulae IX (Fig. 18: va9) plate-like, oval, with a posteromedially directed projection. Gynatrium (Fig. 17: gy) short, saccular, with a pair of short apical lobes, with a pair of small ring sclerites (Fig. 17: rs) and a complex of sclerites surrounding spermathecal opening as shown in Fig. 18. Spermatheca relatively long; proximal duct slightly longer than gynatrium, narrow; dilation (Fig. 17: dil) long, apex reaching base of sternite V within abdomen, basal cross-striate portion very short; distal invagination (Figs. 17, 20: div) subparallel in most of its length, its extreme basal portion strongly tapering, its apical portion somewhat broadened; distal duct (Figs. 17, 20: dd) much thinner than proximal duct, its apical exposed portion (Fig. 17: dd) about 0.3 times as long as length of distal invagination; intermediate part of spermatheca long and rather narrow, weakly broadened distally, both proximal and distal flanges rather narrow but distal flange slightly broader; flexible zone (Fig. 21: fz) forming a thin ring immediately proximad of distal flange; apical receptacle (Fig. 21: ar) small, globose, with two short, almost tubercle-like projections.

Figures

FIGURES 1 – 8. Halyomorpha halys, external male genitalia. 1, genital capsule, posterodorsal view; 2, same, posterior view; 3, same, lateral view, phallus in resting position is shown by dotted lines; 4 – 8, left paramere, different aspects. Scales in mm. Lettering: app = apical process of paramere; blp = basal process of paramere; cs = cuplike sclerite; lam = laminate lobe of paramere; mp = median projection of genital capsule; vif = infolding of ventral rim of genital capsule.